Circuit-closer device.



' R. KOTKAS.

CIRCUIT CLOSER DEVICE. APPLICATION FILED NOV. 20. 1917.

1,280,242. Patented Oct. 1, 1918;

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, UNITED sTATEsraTEN OFFICE.

,aUnoLrH xo'rxas, or PORTLAND, OREGON.

CIRCUIT CLOSER DEVICE.

To all whom it may concern.

Be it known that I, RUDOLPH KQTKAS, a citizen of the United States of Ameica, residing at Portland, State of Oregon, have invented certain new and useful Improvements in Circuit-Closer Devices, of which the following is a specification, reference be.- ing had therein to the accompanying drawin V This invention relates to a burglar alarm and has for its object the production ofa simple and eflicient means for causing an alarm to be sounded should a person step upon the floor under which the alarm is placed.

Another object of this invention is the production of a simple and eflicient circuit closing means used in connection with the alarm.

With these and other objects in view this invention consists of certain novel constructions, combinations and arrangements of parts as will be hereinafter fully described and claimed,

In the drawings Figure l is a transverse sectional view through a portion of a floor and means for supporting the same showin the circuit closing and alarm means carrie thereby. v

Fig. 2 is a section taken on line 22 of Fig. 3 is a section taken on line 3-3 of Fig. 2.

ig. 4 is a perspective view of the circuit closing lever and gage plate secured thereto.

Fig. 5 is a vertical section through the loop of the gage plate showing the same engagin the lower end of the contact lever.

y referrin to the drawings it will be seen that 1 designates the floor which is supported upon the usual main beams or joists 2. One of the joists 2 is provided with a secondary beam or joist 3 spaced from the main beam or joist 2 as shown in Fig. 2 of the drawings. A hanger yoke 4 is secured to the under face of the secondary beam or joist 3 and this hanger yoke 4 supports a contact lever 5. This contact lever 5 is provided with an upturned end 6 having an aperture 7 formed therein throu h which aperture 7 passesthe hanger mem er 4 for supporting the contact lever or member 5. This contact lever 5 is provided with a rolled upturned end 8 carrying an insulating sleeve 9 through which passes a conducting rod 10, the conducting rod 10 be- Patented Oct, 1, 1918.

Application flledNovember 20,1917. Serial No. 203,020.

ing provided with an eye 11 at one end and a contact knob 12 at the other end. The eye 11 is connected to one end of a coil spring 13 and the opposite end of this coil spring 13 is anchored in engagement with a binding post 14 carried by the floor 1.

A gageplate 15 is pivotally mounted upon the joist 2 bynieans of a pivot pin 16 and this gage plate 15 is provided with a rolled portion 17 which rolled portion fits down into a notch 18 formed in the upturned end 6 of the lever 5 for the purpose of swinging the lever 5 as the gage plate 1 5 is swung thereby swinging the upper end of the lever into an ad usted relation with respect to the contact spring 19. The gage late 15 is provided with a pair of parallel depending fingers 20 which fingers are adapted to fit around a screw 21 which screw 21 supports a thumb nut 22 for threading upon the screw 21 and holding the gage plate 15 in an adjustable position.

A contact spring 19 above mentioned is secured to the beams or joists 2 by means of the binding posts 23, the spring 19 having. laterally extending ends 24 as shown in Fig. 3 of the drawings. One of the binding posts 23 is connected to a wire 25 which wire 25 may be rovided with a suitable switch 26 to permit the alarm to be thrown ofl or on according to the will of the operator and thereby permitting the alarm to remain inoperative durin certain period of time when it is desire to walk upon the floor without sounding the alarm. The wire 2-5 is connected to a battery 27 and this battery 27 is connected to a wire 28 the wire 28 being in turn connected to the bell 29. This bell 29 is connected to the binding post 14 by means of a wire 30.

From the foregoing description it is to be understood that the spring 13 is but a small copper coil for the purpose of carrying the electric current in order to make the circuit,

and also with just enough tension so that the joist 2 does bend, carrying with itge ge plate 15, thus causing a pressure on the nner end of end 6, inoving-the-lever 5 inward, forming at connection between lamb spring 19, completing the circuit and cansing the alarm. to ring,

1. A circuit closer eoaimpujsing e.

beam, :1 floor supported upon said beam, :1, cont-net spring carried said been, a contact lever pi-stotally seeunedtosne-sdde-olf said beam, va spring seeummi atone endto the upper enduof sziiet lever aud t the who; end @to sa-idifljoor, and a plate to the beam and engag ng thelexw flow swinging said lever upon its. adjusting the lever with nespeet to said. pen.- tactspring. I

2. A circuit closer device eompr'f main beam and a secondary beam, 41. i above said main beannan contact se cured to said main beam, at contact lever provided with an l p-turned lower end, said end provided-with an aperture and with a. notch injts upper edge, means extending through the aperture and pivotally mounting said lever upon said secondary beam, 21 gage provided near one end with dependin Mists other end with a rollec portion resting in the notch of the up-turned end of the lever, means piivotally mounting upon said main beam, means engagiaghhefingwsvfior 'ihohiingsaid gage in anmdwshed'position fior controlling thepositioneof tke upperimd of the content lever m'dl respected the contact spring, and yieldsbdymeulsifashened; at one endto, the upper endiofsaid :Mhfit lover and at its other end to said floor.

Imty mheveoi I hereunto. ai'fix my spawn.

RUDOLPH KO'IKAS.

Cop es of this spflbt tzniw M mm Whinfi'mngjk Wsiqnqr of Patents, 

